Home / 11,178-16,769.73-3,386.81

Finding the Fourth Proportional to 11,178, 16,769.73 and 3,386.81

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Solution

The fourth proportional to 11,178, 16,769.73 and 3,386.81 is: 5,081.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,178 : 16,769.73 = 3,386.81 : x
  2. Step 2: Convert to fraction form
    11,178/16,769.73 = 3,386.81/x
  3. Step 3: Cross multiply
    11,178x = 16,769.73 × 3,386.81
  4. Step 4: Simplify right side
    11,178x = 56,795,943.89
  5. Step 5: Solve for x
    x = 56,795,943.89/11,178
  6. Step 6: Final answer
    x = 5,081.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.